Function main

freebsd/contrib/openzfs/cmd/zdb/zdb.c:8137–8631

}

int
main(int argc, char **argv)
{
	int c;
	struct rlimit rl = { 1024, 1024 };
	spa_t *spa = NULL;
	objset_t *os = NULL;
	int dump_all = 1;
	int verbose = 0;
	int error = 0;
	char **searchdirs = NULL;
	int nsearch = 0;
	char *target, *target_pool, dsname[ZFS_MAX_DATASET_NAME_LEN];
	nvlist_t *policy = NULL;
	uint64_t max_txg = UINT64_MAX;
	int64_t objset_id = -1;
	int flags = ZFS_IMPORT_MISSING_LOG;
	int rewind = ZPOOL_NEVER_REWIND;
	char *spa_config_path_env, *objset_str;
	boolean_t target_is_spa = B_TRUE, dataset_lookup = B_FALSE;
	nvlist_t *cfg = NULL;

	(void) setrlimit(RLIMIT_NOFILE, &rl);
	(void) enable_extended_FILE_stdio(-1, -1);

	dprintf_setup(&argc, argv);

	/*
	 * If there is an environment variable SPA_CONFIG_PATH it overrides
	 * default spa_config_path setting. If -U flag is specified it will
	 * override this environment variable settings once again.
	 */
	spa_config_path_env = getenv("SPA_CONFIG_PATH");
	if (spa_config_path_env != NULL)
		spa_config_path = spa_config_path_env;

	/*
	 * For performance reasons, we set this tunable down. We do so before
	 * the arg parsing section so that the user can override this value if
	 * they choose.
	 */
	zfs_btree_verify_intensity = 3;

	while ((c = getopt(argc, argv,
	    "AbcCdDeEFGhiI:klLmMo:Op:PqRsSt:uU:vVx:XYyZ")) != -1) {
		switch (c) {
		case 'b':
		case 'c':
		case 'C':
		case 'd':
		case 'D':
		case 'E':
		case 'G':
		case 'h':
		case 'i':
		case 'l':
		case 'm':
		case 'M':